What next for President Abdoulaye Wade?

The authorities in Senegal have deployed the army to put an end to rioting and protests that have rocked the country in recent days. The demonstrations were in response to President Abdoulaye Wade's plans to limit the threshold required to win in the first round of voting in presidential elections, and the perceived attempt to install his son as Vice President and successor to him. He's now backed down - but what might comes next?